Embroidering-machine.



No. 824,725. PATBNTED JULY 3, 1906.

v. KOBLER.

EMBROIDERING MACHINE. APPLICATION FILED JUNE 19, 1905.

Wi'in asses:

THE NORRIS PETERS C0,, WASHINGTON. m c.

UNITED sTArEs PATENT OFFICE.

VICTOR KOBLER, OF RORSOHACH, SWITZERLAND, ASSIGNOR TO THE FIRM OF ADOLPHSAURER, OF ARBON, WVEITEGASSE, SWITZERLAND.

EMBROlDERlNG-MACHINE.

ratenteol July 3, 1906.

Application filed June 19, 1905. Serial No. 265,915.

To (all whom, it may concern:

Be it known that I, VIoToR KOBLER, a citizen of the Republic ofSwitzerland, residing at Rorschach, in Switzerland, have invented newand useful Improvements in Embroidering-Machines, of which the followingis a specification.

The object of the present invention is a frame suspension forembroidering-machines in which all of the supporting-bearings of thecounterbalancing-gear for carrying and balancing the frame with themounted fabric are secured to the most stable parts of the machinethemain side supports.

As the perfect manufacture of the fabric is dependent upon thevibrationless and steady operation of the frame, it is obviously of thegreatest importance to keep away as much as possible the vibrations ofthe machine from the fabric-frame. This I attain by thus disposing thebearings journaling the supporting-gear in relation to the main supportsthat they exert their vertical pressure within these most stable partsof the machine. Heretofore the fabric-frame and thecounterbalancing-weights have been suspended by means of segments orlevers to longitudinal or cross shafts, using several ournals at variousvibrating points more or less distantly located from the main supports.As a consequence these bearings vibrating with their points ofattachment, the manufacture of good fabric was seriously interferedwith.

In my improved construction I pivot two levers to the main supports, oneat either side of the fabric-frame, in such a manner that their freeends, which operate the frame, are directed toward one another for thepurpose of counterbalancing the side pressures caused upon thefabric-frame traveling vertically up or down by the friction betweenthese lever-arms and the frame.

In order to make the invention more readily understood, I will nowdescribe it with reference to the accompanying drawing, which representsa front view of one form of my invention, parts of the machine having nobearing on this invention having been omitted.

In the drawing, (t represents the fabricframe. I) and 7c are the mainside supports. The vertical middle planes containing the longitudinalaxis of the bearings p and {1 co- 1 other, one of the ends incide withthe vertical middle plane of the respective supports b and 10. The freeend of the rocking lever c, journaled at p, carries a roller (1 andslides therewith in the slot f of the frame a. To the other end ispivotally suspended the wei ht it by means of the rod g, the lower endof which in turn is pivoted to the bell-crank lever i, fulcrumed to thesupport I). Z carries a roller m and engages therewith the slot n in theframe a. The lower arm of this rocking lever, which latter is pivoted atg to the support It, is jointed to the other rocking lever e by means ofthe rod 0. In this construction the equilibrium of the frame andcounterweight is assured in any position of the frame. Upon the frameascending the friction of roller d in slot f causes a slight sidepressure upon the frame, which pressure, however, is ofiset by thecorresponding side pressure exerted by roller m in slot a. By this meansa vertical frame movement is assured which is absolutely free fromvibration.

Having now particularly described and asoertained the nature of the saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is 1. In an embroidering-machine, the combination with thesupports, of a fabric-frame mounted between the latter and havinglongitudinally-arranged slots therein, a lever on each support, the freeends of the levers being directed toward each other and the center ofthe frame, bearing-rollers on the free ends of the levers traveling insaid slots, and counterbalancing means connected to said levers.

2. In an embroidering-machine, the combination with two supportingmembers, of a fabric-frame mounted between the latter and havinglongitudinally-arranged slots therein, a lever fulcrumed on eachsupport, the free ends of the levers being directed toward each otherand the frame, a roller journaled in the free end of each lever adaptedto travel in said slots, and counterbalancing means connected to thepower end of each lever.

3. In an embroidering-machine, thecombination with two supportingmembers, of a fabric-frame mounted between the latter, a straight leverfulcrumed on one of the supports and a bell-crank lever fulcrumed on theof each of said levers The free end of the rocking lever directed towardeach other'and slidably connected to the frame, a second bell-cranklever pivoted to the support carrying the straight lever, a rodconnecting the two bell-crank le- 5 vers and a weighted rod connectingthe two Witnesses:

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

VICTOR KOBLER.

levers mounted on the same support, sub- A. LIEBERKNEOHT, stantially asand for the purposes set forth. ERNST FISCHER.

